راه اندازی usartدر stm32f103RET
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#include "stm32f10x.h"
#include "RTC_Time.h"
#include <stdio.h>
#ifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
/* Private function prototypes -----------------------------------------------*/
void GPIO_Configuration(void);
void USART_Configuration(void);
/************************************************** *****************************
* Function Name : main
* Description : Main program
* Input : None
* Output : None
* Return : None
* Attention : None
************************************************** *****************************/
void Delay (uint32_t nCount)
{
for(; nCount != 0; nCount--);
}
int main(void)
{
GPIO_Configuration();
USART_Configuration();
// printf("\r\n");
//printf("****************************************** *********************\r\n");
//printf("* *\r\n");
//printf("* hi *\r\n");
//printf("* *\r\n");
//printf("****************************************** *********************\r\n");
/* LED1-ON LED2-ON */
GPIO_SetBits(GPIOA, GPIO_Pin_2);
Delay(0xfffff);
Delay(0xfffff);
Delay(0x5ffff);
// GPIO_ResetBits(GPIOA , GPIO_Pin_2);
//GPIO_SetBits(GPIOB , GPIO_Pin_1);
//RTC_Init();
/* Infinite loop */
while (1){
USART_SendData(USART1,0x02);
// printf("* Thank you *\r\n");
GPIO_ResetBits(GPIOA , GPIO_Pin_2);
Delay(0xfffff);
Delay(0xfffff);
Delay(0x5ffff);
GPIO_SetBits(GPIOA , GPIO_Pin_2);
Delay(0xfffff);
Delay(0xfffff);
Delay(0x5ffff);
}
}
/************************************************** *****************************
* Function Name : GPIO_Configuration
* Description : Configure GPIO Pin
* Input : None
* Output : None
* Return : None
* Attention : None
************************************************** *****************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);
/**
* LED1 -> PB0 LED2 -> PB1
*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ;//| GPIO_Pin_1;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
/************************************************** *****************************
* Function Name : USART_Configuration
* Description : Configure USART1
* Input : None
* Output : None
* Return : None
* Attention : None
************************************************** *****************************/
void USART_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);
/*
* USART1_TX -> PA9 , USART1_RX -> PA10
*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate =115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
/**
* @brief Retargets the C library printf function to the USART.
* @param None
* @retval None
*/
PUTCHAR_PROTOTYPE
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART */
USART_SendData(USART1, (uint8_t) ch);
/* Loop until the end of transmission */
while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
{}
return ch;
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/************************************************** ************************************************** *****
END FILE
************************************************** ************************************************** *****/
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